The monitoring network within this area

Hydrionis holds 441 values from 2 gauges within it. Discharge is a property of a gauge and its reach, not of this drainage area, so this page reports the network and its records rather than a single figure.

Gauges

441

Values held

1904–2026

Record spans

Gauges within the Upper Yampa huc8 subbasin

2 monitoring points, positioned as the publisher records them.

Flood peaks, as measured

This gauge's flood record, as measured. Unlike a daily mean it is the discharge at the moment the river was highest, which is the figure flood frequency analysis is built on.

Largest measured flow of each year at YAMPA RIVER AT STEAMBOAT SPRINGS, CO

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1904–2025.

Show relevant events (1 event)Shading marks when something was recorded, not what caused the line.

Published by the gauge's own operator from its sub-daily record; Hydrionis stores the figure rather than recomputing it. A year the gauge did not cover produces no value rather than a low one, and the gaps are stated below the chart. A peak is a property of this gauge and its reach: a larger flood upstream or downstream of it is not in this series.

What the shaded periods are (1 event)

A shaded period marks when something was recorded, not what caused the shape of the line. Where the two coincide, they coincided.

Documented record — A documented event, compiled from cited sources after it happened. The dates are as good as the record, which for older events can mean the month rather than the day.

Event	Type	Period	Standing	Authority
Hurricane Katrina water and sanitation collapse	Flood	2005-08-29 – 2005-09-30	Documented record	Compiled record

Not shown on this chart

The 1976 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
The 2022 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Yorkshire drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cantareira water crisis, São Paulo — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cape Town Day Zero — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
European drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.

View the data behind this chart

Underlying data
Period	YAMPA RIVER AT STEAMBOAT SPRINGS, CO (m³/s)
1904	101
1905	129
1906	143
1910	88.3
1911	81.0
1912	128
1913	76.5
1914	178
1915	79.9
1916	97.1
1917	166
1918	146
1919	104
1920	140
1921	193
1922	91.2
1923	110
1924	108
1925	82.1
1926	128
1927	118
1928	144
1929	124
1930	102
1931	76.5
1932	101
1933	131
1934	41.3
1935	118
1936	116
1937	84.4
1938	123
1939	83.8
1940	91.2
1941	107
1942	93.4
1943	93.4
1944	96.3
1945	80.1
1946	90.3
1947	74.2
1948	119
1949	104
1950	82.7
1951	106
1952	163
1953	131
1954	53.0
1955	73.1
1956	106
1957	150
1958	128
1959	87.2
1960	88.9
1961	78.7
1962	122
1963	57.5
1964	84.4
1965	134
1966	54.9
1967	83.3
1968	116
1969	74.2
1970	109
1971	109
1972	116
1973	123
1974	164
1975	121
1976	80.4
1977	30.6
1978	123
1979	124
1980	93.4
1981	68.8
1982	122
1983	149
1984	161
1985	117
1986	103
1987	63.1
1988	88.9
1989	57.5
1990	68.8
1991	88.9
1992	66.3
1993	92.9
1994	60.6
1995	105
1996	111
1997	150
1998	78.7
1999	86.9
2000	131
2001	80.1
2002	36.5
2003	147
2004	55.2
2005	90.9
2006	109
2007	71.4
2008	109
2009	86.6
2010	122
2011	147
2012	44.5
2013	80.1
2014	137
2015	101
2016	110
2017	85.5
2018	86.4
2019	119
2020	109
2021	49.0
2022	83.5
2023	104
2024	124
2025	80.4

About this series

Everything below is a property of the data rather than a rating of it. There is deliberately no single confidence score: how much a gap matters depends on what you are about to do with the series, and only you know that.

Source	United States Geological Survey — National Water Information System · US Government work — public domain
How the values came to exist	Measured
Period held	1904–2025
Completeness	97.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	One period inside 1904–2025 holds no value: 1907 to 1909, 3 years with no reading. It is drawn as a break in the line and is never interpolated across.
Continuity	The record begins in 1904 and is not continuous from it: 122 years separate the first value from the last, and 98% of the years between them are held. The span is not the record.
Last read from the publisher	2026-08-31
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How this was produced

How much of the rain came back out

A discharge in cubic metres per second cannot be compared with anything: the larger number may only mean the larger catchment. Divided by the area draining to the gauge it becomes a depth of water over that land, which answers a question a reader already has — of the rain that fell here, how much came back out as river?

Water leaving the catchment above YAMPA RIVER AT STEAMBOAT SPRINGS, CO, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1911–2024.

Show relevant events (1 event)Shading marks when something was recorded, not what caused the line.

Computed by Hydrionis from the published annual mean flow and the catchment area the station's own publisher states. It is not a water balance: the difference between rainfall and runoff is not evaporation alone but also change in groundwater storage, water abstracted and taken elsewhere, and water imported by transfer schemes — which is why a catchment can yield more runoff than the rain that fell on it without anything being measured wrongly. A different area figure rescales every value here by the ratio between them.

What the shaded periods are (1 event)

A shaded period marks when something was recorded, not what caused the shape of the line. Where the two coincide, they coincided.

Documented record — A documented event, compiled from cited sources after it happened. The dates are as good as the record, which for older events can mean the month rather than the day.

Event	Type	Period	Standing	Authority
Hurricane Katrina water and sanitation collapse	Flood	2005-08-29 – 2005-09-30	Documented record	Compiled record

Not shown on this chart

The 1976 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
The 2022 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Yorkshire drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cantareira water crisis, São Paulo — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cape Town Day Zero — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
European drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.

View the data behind this chart

Underlying data
Period	YAMPA RIVER AT STEAMBOAT SPRINGS, CO (mm)
1911	250
1912	405
1913	236
1914	355
1915	225
1916	304
1917	421
1918	342
1919	227
1920	398
1921	443
1922	230
1923	359
1924	275
1925	272
1926	318
1927	381
1928	385
1929	397
1930	286
1931	197
1932	321
1933	282
1934	102
1935	216
1936	320
1937	201
1938	312
1939	247
1940	219
1941	262
1942	258
1943	247
1944	208
1945	277
1946	236
1947	319
1948	286
1949	328
1950	235
1951	297
1952	369
1953	240
1954	133
1955	201
1956	258
1957	459
1958	308
1959	251
1960	266
1961	211
1962	372
1963	160
1964	218
1965	327
1966	159
1967	225
1968	297
1969	244
1970	354
1971	361
1972	260
1973	326
1974	373
1975	307
1976	223
1977	103
1978	360
1979	285
1980	284
1981	155
1982	372
1983	412
1984	504
1985	341
1986	346
1987	180
1988	229
1989	153
1990	175
1991	242
1992	171
1993	296
1994	165
1995	294
1996	383
1997	457
1998	309
1999	265
2000	257
2001	207
2002	105
2003	245
2004	180
2005	250
2006	310
2007	200
2008	329
2009	290
2010	244
2011	507
2012	137
2013	213
2014	379
2015	289
2016	305
2017	220
2018	202
2019	328
2020	251
2021	116
2022	210
2023	304
2024	285

About this series

Source	United States Geological Survey — National Water Information System · US Government work — public domain
How the values came to exist	Derived Computed by Hydrionis
Period held	1911–2024
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1911 to 2024 is held.
Last read from the publisher	2026-08-24
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How this was produced

Every gauge Hydrionis holds within this area

Gauges within the Upper Yampa and what each holds
Gauge	Measures	Values	Record
YAMPA RIVER AT STEAMBOAT SPRINGS, CO	burned area within 50 km, catchment area, annual maximum river flow, mean river flow	270	1904–2026
ELK RIVER AT CLARK, CO.	burned area within 50 km, catchment area, annual maximum river flow, mean river flow	171	1911–2026

How these gauges were attached to this water

Assigned by the publisher to a numbered basin Every gauge here is assigned to this drainage area by its own publisher, which issues the area an official code — 14050001. A drainage area is not a river: it contains the tributaries as well as the main channel, and a gauge in it may be on any of them.

What each gauge’s link to this water rests on
Gauge	Evidence	Established
YAMPA RIVER AT STEAMBOAT SPRINGS, CO	Stated by the publisher — USGS site service, huc_cd field — https://waterservices.usgs.gov/nwis/site/ ; named from the USGS Watershed Boundary Dataset 8-digit HU (Subbasin) layer — https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer/4	2026-08-26
ELK RIVER AT CLARK, CO.	Stated by the publisher — USGS site service, huc_cd field — https://waterservices.usgs.gov/nwis/site/ ; named from the USGS Watershed Boundary Dataset 8-digit HU (Subbasin) layer — https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer/4	2026-08-26

What this record holds

Hydrionis decides which waters get a page, and which of those are offered to search, from what is actually held rather than from how the page reads. Five signals are counted; this record has 3 of them, which makes it a full profile.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	2	no
Years spanned	123	yes, 20 or more
Values held	441	no
Distinct measurements	4	yes, 2 or more
Publishers measuring it	2	yes, 2 or more
Official identifiers	1	recorded, not counted

Use this data

Machine-readable JSON /api/v1/observations/by-subject/gauge-usgs-09239500.json
How to cite this, and who you must credit
How these figures were produced
Request this at a different scale, format or geography

No bulk download is offered here, which is a licence position rather than a product one: at least one contributing publisher does not permit redistribution. The values can be read on the page, cited, and pointed to at source.

Attribution and citation

Suggested citation for Hydrionis

Hydrionis (2026), Upper Yampa gauge records, accessed 2026-09-02, hydrionis.com/waters/united-states-upper-yampa/

Cite Hydrionis where you rely on values Hydrionis computed, on the method that produced them, or on the compilation itself. The underlying measurements remain the publishers’ and their attribution requirements apply to you directly.

Recommended, not required. Hydrionis does not claim rights over unmodified public data it relayed, and doing arithmetic on somebody else’s measurements does not make them Hydrionis’s. Cite the version and the access date: the Upper Yampa gauge records changes as publishers release and as methods are revised, and a citation without both cannot be checked later. Full guidance is on cite and reuse.

None of the contributing licences requires attribution. Crediting the publishers is still good practice and they are listed above.

Where these figures come from

MeasuredHigh confidence2025-06-01

Source: USGS — National Water Information System, USGS site 09239500, annual peak streamflow. Licence: Open.

Method: The instantaneous maximum discharge of each water year as published by USGS, dated to the day it occurred. One value per October-to-September water year; where the publisher lists both a systematic and a historic peak for a year, the larger is the annual maximum. Values the publisher marks as maximum daily averages are not held here, because they are not instantaneous peaks. Values marked as bounded rather than measured are held as censored observations carrying the bound. Cubic feet per second are converted to cubic metres per second and the publisher unit is recorded alongside.

Rating curves are extrapolated at extreme discharges, so the largest values in a peak series carry the largest measurement uncertainty. Data from the U.S. Geological Survey National Water Information System, a work of the United States government and therefore in the public domain.

Retrieved 31 August 2026.